The number of Americans getting divorced rose for the third year in a row to about 2.4 million in 2012, after plunging in the 18-month recession ended June 2009, according to U.S. Census Bureau data. Whatever the social and emotional impact, the broad economic effects of the increase are clear: It is contributing to the formation of new households, boosting demand for housing, appliances and furnishings and spurring the economy. Divorces are also prompting more women to enter the labor force.